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Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING   FEBRUARY 2011 , Volume 24 , Number 1 (TRANSACTIONS B: APPLICATIONS); Page(s) 27 To 36.
 
Paper: 

IMPACT OF TRANSPORTATION SYSTEM ON TOTAL COST IN A TWO-ECHELON DUAL CHANNEL SUPPLY CHAIN

 
 
Author(s):  MIRZAHOSSEINIAN H., MAKUI A., TEIMOURY E., RANJBAR BOURANI M.*, AMOOZAD KHALILI H.
 
* DEPARTMENT OF INDUSTRIAL ENGINEERING, ISLAMIC AZAD UNIVERSITY-SOUTH TEHRAN BRANCH POSTAL CODE 4615864866, TEHRAN, IRAN
 
Abstract: 
The advent of e-commerce has prompted many manufacturers to redesign their traditional channel structure by engaging in direct sales. In this paper, we present a dual channel inventory model based on queuing theory in a manufacturer-retailer supply chain, consisting of a traditional retail channel and a direct channel which stocks are kept in both upper and lower echelon. The system receives stochastic demand from the both channel which each channel has an independent demand arrival rate. A lost-sales model which no backorder is allowed is supposed. The replenishment lead times are assumed independent exponential random variables for both warehouse and the retail store.
Under the replenishment inventory policy, the inventory position is kept constant at a base-stock level. To analyze the chain performance, an objective function included holding, lost sales and transportation cost is defined. Simulated Annealing is used to find a good solution for inventory level in each echelon. At the end, we conduct a parametric analysis to study the effect of replenishment rate between warehouses on total cost and indicate how to decrease total cost by choosing a suitable transportation system.
 
Keyword(s): SUPPLY CHAIN MANAGEMENT, DIRECT CHANNEL, INVENTORY, TRANSPORTATION SYSTEM, SIMULATED ANNEALING
 
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